2013 Fiscal Year Final Research Report
Study for mechanisms of responses of coastal marine ecosystem and biogeochemical cycle to environmental changes
| Project/Area Number |
23710043
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental impact assessment/Environmental policy
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| Research Institution | Ehime University |
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Principal Investigator |
YOSHIE Naoki 愛媛大学, 沿岸環境科学研究センター, 講師 (50374640)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 海洋生態系 / 物質循環 / 沿岸域 / 外洋擾乱 / 気候変動 / 気象擾乱 / プランクトン |
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| Research Abstract |
I studied mechanisms of responses of marine ecosystem and biogeochemical cycle to environmental changes focusing on the Bungo Chanel in the Seto Inland Sea, where is a typical coastal region fronting to the open ocean. I found the mechanisms of the ecosystem responses to the following abrupt environmental changes;
1. The intrusion of oceanic subsurface water to coastal bottom layer is called "Sokoirishio". Sokoirishio supplies much amount of nutrient from the open ocean to the coast, and causes the abrupt change of ecosystem to the productive ecosystem dominated by diatom.
2. The super heavy rain in the summer of 2012 supplied huge amount of fresh water to the ocean, and the low salinity and low density water broadly covered the surface layer of coastal region. This water blocked the intrusion of oceanic surface water to coastal surface layer, which is called "Kyucho" and can clean the polluted coastal water. The blocking of Kyucho might be lead to the large scale harmful algae bloom.
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[Journal Article] A modeling approach to evaluate growth and movement for recruitment success of Japanese sardine (Sardinops melanostictus) in the western Pacific2012
Author(s)
Okunishi, T., S. Ito, D. Ambe, A. Takasuka, T. Kameda, K. Tadokoro, T. Setou, K. Komatsu, A. Kawabata, H. Kubota, T. Ichikawa, H. Sugisaki, T. Hashioka, Y. Yamanaka, N. Yoshie, T. Watanabe
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Journal Title
Fisheries Oceanogr.
Volume: 21:1
Pages: 44-57
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[Journal Article] Ecosystem and nutrient dynamics in the Seto Inland Sea, Japan. In Interdisciplinary Studies on Environmental Chemistry Vol.5, Modeling and Analysis of Marine Environmental Problems, ed. by K. Omori, X. Guo, N. Yoshie, N. Fujii, I. C. Handoh, A. Isobe, and S. Tanabe2011
Author(s)
Yoshie, N., X. Guo, N. Fujii, and T. Komorita
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Journal Title
Terra Scientific Publishing Company, Tokyo
Pages: 39-49
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[Presentation] TEX86 and seasonal distributions of archaeal membrane lipids across the chemocline in the modern shallow coastal ocean2012
Author(s)
Moriya, K., M. Kuwae, M. Yamamoto, T. Kunihiro, H. Onishi, H. Hamaoka, M. Saito, T. Sagawa, N. Fujii, N. Yoshie, K. Omori and H. Takeoka
Organizer
JpGU meeting 2012
Place of Presentation
Chiba(oral)
Year and Date
2012-05-25
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[Presentation] Distributions of crenarchaeal membrane lipids and TEX86 thermometry in the modern enclosed shallow coastal anoxic ocean2011
Author(s)
Moriya, K., M. Kuwae, M. Yamamoto, T. Kunihiro, H. Onishi, M. Saito, H. Hamaoka, T. Sagawa, J. Shibata, N. Fujii, N. Yoshie, K. Omori and H. Takeoka
Organizer
AGU Fall meeting 2011
Place of Presentation
San Francisco, USA(poster)
Year and Date
2011-12-05
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[Presentation] Distributions of archaeal membrane lipid and DNA within the modern coastal shallow marine water column2011
Author(s)
Moriya, K., M. Kuwae, M. Yamamoto, T. Kunihiro, H. Onishi, M. Saito, H. Hamaoka, T. Sagawa, J. Shibata, N. Fujii, N. Yoshie, K. Omori and H. Takeoka
Organizer
JPGU 2011
Place of Presentation
Chiba(poster)
Year and Date
2011-05-26
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[Presentation] Distribution of marine diazotrophic cyanobacteria around Japan in the western North Pacific Ocean in summer0
Author(s)
Taniuchi, Y., T. Kodama, K. Sakamoto, M. Nakagawa, N. Yoshie, T. Hasegawa, K. Hidaka, T. Ichikawa, and A. Kuwata
Organizer
18th International Congress on Nitrogen Fixation
Place of Presentation
Miyazaki, Japan(Poster)
Year and Date
00001115
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